US2858939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage disposal system
Assignee: WICKLAND Manufacturing Co
•
Filing: 1956-05-10
•
Granted: 1958-11-04
•
Expires: 1976-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert F Corliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/16; Y; Y10; Y10S; Y10S4/00; Y10S4/19
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US553994A
Cited
US1303358A
Cited
US1666515A
Cited
US1948125A
Cited
US1982266A
Cited
US2144386A
Cited
US2246224A
Cited
US2724837A
Cited
US2740971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |